20569989

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{619}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 32140800

約数和(自身を除く): 11570811

約数列:

[1, 3, 11, 19, 33, 53, 57, 159, 209, 583, 619, 627, 1007, 1749, 1857, 3021, 6809, 11077, 11761, 20427, 32807, 33231, 35283, 98421, 129371, 360877, 388113, 623333, 1082631, 1869999, 6856663, 20569989]

約数ペア:

[(1, 20569989), (3, 6856663), (11, 1869999), (19, 1082631), (33, 623333), (53, 388113), (57, 360877), (159, 129371), (209, 98421), (583, 35283), (619, 33231), (627, 32807), (1007, 20427), (1749, 11761), (1857, 11077), (3021, 6809)]